Active Heads-Up Display Positioning for Driver Gaze
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Solution Overview
Problem
Existing heads-up displays do not effectively adjust their position to optimally align with a driver's field of view, potentially being too high, low, left, or right due to variations in driver height and seating position, which can lead to suboptimal visibility of critical information.
Innovation Solution
An active heads-up display system that includes a driver monitoring system to track gaze direction and head orientation in a 3D coordinate system, calculating track values to adjust the display's position via a gateway circuit and heads-up display, ensuring the information remains centered within the driver's field of view.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the heads up display projects information at a fixed position, then the device structure is simple, but the information may be too high, too low, too far left, or too far right for drivers of different heights and seating positions
Solution Approach 1:
The patent implements dynamic adjustment of the heads-up display position based on real-time driver monitoring data. The system continuously tracks driver gaze direction and head position, then dynamically repositions the displayed information to remain within the driver's field of view, transforming the fixed display into an adaptive, moving display that responds to driver movements.
Solution Approach 2:
The patent establishes a feedback loop where the driver monitoring system continuously provides data about driver gaze and head position, which is processed by a gateway circuit to generate control signals that adjust the heads-up display position. This closed-loop feedback mechanism ensures the display remains optimally positioned without requiring manual intervention.
2Adaptability or versatility
If the heads up display position is manually adjusted, then the adaptability to driver preferences is improved, but the ease of operation is reduced and requires driver intervention
Solution Approach 1:
The patent implements a self-adjusting heads-up display system that automatically monitors driver position and gaze direction, then autonomously repositions the displayed information without requiring any manual input from the driver. The system serves itself by using its own monitoring capabilities to adjust its display position, eliminating the need for driver intervention entirely.
Solution Approach 2:
The patent replaces manual mechanical adjustment mechanisms with an automated electronic control system. Instead of requiring physical manipulation of adjustment controls by the driver, the system uses electronic sensors to monitor driver position and electronic actuators to automatically reposition the display, substituting mechanical driver action with automated electromechanical control.
3Ease of operation
If the heads up display is positioned to accommodate all driver heights, then the ease of operation is improved, but the manufacturing precision required increases to maintain optimal positioning
Solution Approach 1:
The patent employs dynamic positioning to overcome the limitations of fixed manufacturing tolerances. Rather than requiring precise manufacturing to accommodate all driver sizes, the system dynamically adjusts the display position in real-time based on actual driver position and gaze direction, allowing a broader range of driver sizes and positions to be accommodated without increasing manufacturing precision requirements.
Data Source
AI summary
An active heads up display system includes a driver monitoring system, a gateway circuit, and a heads up display. The driver monitoring system tracks a gaze direction of a user, calculates track values in response to a field of view of the user based on the gaze direction, and transmits the track values on a first bus. The gateway circuit receives the track values from the first bus, translates the track values to command values, and transmits the command values on a second bus. The heads up display receives the command values from the second bus, generates a graphical presentation viewable by the user, projects the graphical presentation at a current position in front of the user, and adjusts the current position to an updated position centered within the field of view of the user in response to the command values.